Nettersheim (Eifel) in the Devonian period
The Eifel is a part of the Rhine Slate mountain range . Characteristic for this low mountain range are fallen stone packs from the Devon time, who are exist out geological saddle and hollows. These stone packs are ca. 400–350 million years mature. Because the Eifel consists for the greatest part of sandstone and clay stone from the lower Devonian, are in the so called North-South-depression survived in geological hollows as fossil-rich middle Devonian limestone. This depression of the lime Eifel pulls itself from the Mechernicher Triassic-triangle in the north, up to the Trier Luxemburger Triassic-bight in the south and consists of altogether eight lime hollows, whereby Nettersheim lies in the northernmost of these, the Sötenicher lime hollow".
Nettersheim lay in the Devonian time south of the equator in the so-called Eifeler meeresstrasse in the range of a flat, warm sea. In the northwest and southeast this sea range was limited by large islands. At this time here tropical temperatures prevailed
This sea was inhabited reef-forming organisms (korallen, Stromatoporen, Brachiopoden, sea-lilies....) of many, above all, whose petrified remnants we can find today.
In the lower Devon demolition masses, sand were shipped and red clay mud, by rivers from the mainland into this sea zone. These deposits were converted by overlapping pressure to rock.
These rocks are nearly free from fossils. Developed on that only little fruitful soils, which are shaped by forest-economical use today particularly and which carry large forest latch plate of the Eifel.
In the central Devonian however limy rocks are determining such as marl, lime stones and limy clay slate.
These limy layer sequences make the Eifel for the geologically interested nature friend so exciting and attractively with his fossil wealth.
The lime hollows are shaped due to their fruitful soils by agricultural use and carry today open land habitats.
Thus the today's land use in the Eifel habitude of the geological underground on, namely an active change of lower Devonian silicate saddles (forest) and middle Devonian lime crests (open country).
The stone bridge in de surrounding of Nettersheim exist mainly out of reef limes
They supply the raw material for the lime-processing industry. The renovated lime kiln (Kaninhecke) from that 19. Century and the associated work houses are witnesses of this branch of industry.
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